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Natuurwetenskappe

Graad 4

Materie en stowwe

Module 50

Materie

Aktiwiteit:

Om die eienskappe van materie te ontdek en die wonder daarvan te beleef

[lu 1.1.2, 2.2.1]

Kom ons speel die speletjie:

I see with my little eye…..

en beskryf dan die ding wat jy sien deur die volgende dinge te sê:

Hoe dit voel: hard of sag, ens.

Of ‘n mens dit kan eet, drink

Of ‘n mens daarmee kan speel, ens.

As jou maats na vyf raaiskote nog nie kan raai wat dit is nie, wen jy ‘n punt. As iemand dit reg raai, kry daardie leerder ‘n punt.

Wat is materie?

Alles waaraan jy kan raak, is materie.

Materie het massa.

P robeer die volgende (1):

Tel jou liniaal op. Hoe voel dit?

Tel nou jou maat op. Hoe voel dit? Wat was die moeilikste om op te tel?

My bevinding is:

Materie beslaan ruimte.

Probeer die volgende (2):

Neem ‘n vaas met water.

Sit blomme daarin. Wat gebeur met die water?

Hoekom dink jy gebeur dit?

My bevinding is:

Neem ou tydskrifte en knip alle prentjies wat op die eerste 10 bladsye is, uit. Dit behoort lewende en nie-lewende materie in te sluit. Klassifiseer nou die prentjies wat jy uitgeknip het in lewende en nie-lewende materie. Lys eers die eienskappe wat lewende materie moet hê voordat jy begin uitknip.

Assessering

LEERUITKOMS 1: WETENSKAPLIKE ONDERSOEK

Die l eerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard

Dis duidelik wanneer die leerder

1.1 ondersoeke beplan, bv.:

1.1.2 praat oor persoonlike ervarings en lig aspekte uit wat verband hou met wetenskap en tegnologie.

LEERUITKOMS 2: KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewings- kennis toe.

Assesseringstandaard

Dis duidelik wanneer die leerder

2.2 inligting kategoriseer, bv.:

2.2.1 volg instruksies om diere in groepe van dié met twee bene, met vier bene en met meer as vier bene te sorteer.

Memorandum

Probeer die volgende (1)

  • Tel jou liniaal op. Hoe voel dit? Tel nou jou maat op. Hoe voel dit? Wat was die moeilikste om op te tel? Antwoord:
  • Die liniaal is ligter as die maat, maar albei het massa.

Probeer die volgende (2)

  • Neem ‘n vaas met water. Sit blomme daarin. Wat gebeur met die water? Hoekom dink jy gebeur dit?Antwoord:
  • Die water styg in die vaas. Die blomme en die water is materie. Altwee gebruik ruimte.

Lys eers die eienskappe wat lewende materie moet hê, voordat jy begin uitknip.

  • Beweging: dit moet kan beweeg
  • Asemhaling: dit moet asem kan haal
  • Voortplanting: dit moet kan voortplant
  • Voedsel inneem: dit moet kan eet en drink
  • Uitskeiding: dit moet ongewenste stowwe uit die liggaam kan uitskei, bv. sweet

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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